| My wife's wipers just stopped recently on her 2002 cooper (has been snowing here and very cold). After reading several threads I checked the fuses and relays without any luck.
Today I checked the motor's earth and ran a new cable from one of the motor's mounting bolts to the -ve terminal of the battery - worked a treat!
Definately worth a try, have read this on 5 or 6 forums but never thought I'd be that lucky but I was!
Hope this helps someone cos I'm well chuffed. | 
